Question

Qt如何读取数据文件

Answer 1

#include <QFile>

#include <QString>
#include <QIODevice>
#include <QDebug>
#include <QTextStream>

void Read(QString Filename)//名字自己定，需要带路径
{

QFile mFile(Filename);

if(!mFile.open(QFile::ReadOnly|QFile::Text))

{

qDebug()<<"could not open file for read!";

return;

}

QTextStream in(&mFile);

QString mtext = in.readAll();

// mtext = mtext.trimmed();

qDebug()<<mtext;

if(mtext == "")

qDebug()<<" read over!";

mFile.flush();

mFile.close();
}